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code coverage reporting for <code>let-else</code> interacts poorly with rustfmt

A-code-coverageArea: Source-based code coverage (-Cinstrument-coverage)Area: Source-based code coverage (-Cinstrument-coverage)

C-bugCategory: This is a bug.Category: This is a bug.

F-let_elseIssues related to let-else statements (RFC 3137)Issues related to let-else statements (RFC 3137)

needs-triageThis issue may need triage. Remove it if it has been sufficiently triaged.This issue may need triage. Remove it if it has been sufficiently triaged.

Status: Open.

#143149 In rust-lang/rust;

· briansmith opened on Jun 28, 2025

Rust Coverage not working if lines are formatted across multiple lines

A-code-coverageArea: Source-based code coverage (-Cinstrument-coverage)Area: Source-based code coverage (-Cinstrument-coverage)

C-bugCategory: This is a bug.Category: This is a bug.

S-needs-reproStatus: This issue has no reproduction and needs a reproduction to make progress.Status: This issue has no reproduction and needs a reproduction to make progress.

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

Status: Open.

#142291 In rust-lang/rust;

· Ryang20718 opened on Jun 10, 2025

Instrumentation profile data contains empty function name (?) as of <code>nightly-2025-05-19</code>

A-code-coverageArea: Source-based code coverage (-Cinstrument-coverage)Area: Source-based code coverage (-Cinstrument-coverage)

C-bugCategory: This is a bug.Category: This is a bug.

E-needs-mcveCall for participation: This issue has a repro, but needs a Minimal Complete and Verifiable ExampleCall for participation: This issue has a repro, but needs a Minimal Complete and Verifiable Example

regression-from-stable-to-nightlyPerformance or correctness regression from stable to nightly.Performance or correctness regression from stable to nightly.

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

Status: Open.

#141577 In rust-lang/rust;

· jan-ferdinand opened on May 26, 2025

SIGILL when compiling <code>cc</code> with <code>-C instrument-coverage</code> <code>-Z coverage-options=mcdc</code>

A-code-coverageArea: Source-based code coverage (-Cinstrument-coverage)Area: Source-based code coverage (-Cinstrument-coverage)

C-bugCategory: This is a bug.Category: This is a bug.

E-needs-mcveCall for participation: This issue has a repro, but needs a Minimal Complete and Verifiable ExampleCall for participation: This issue has a repro, but needs a Minimal Complete and Verifiable Example

F-coverage-mcdcMC/DC coverage via -Cinstrument-coverage with -Zcoverage-options=mcdcMC/DC coverage via -Cinstrument-coverage with -Zcoverage-options=mcdc

requires-nightlyThis issue requires a nightly compiler in some way.This issue requires a nightly compiler in some way.

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

Status: Open.

#140677 In rust-lang/rust;

· esarver opened on May 5, 2025

Coverage 0% when <code>opt-level = 3</code> and <code>aarch64-linux-android</code>

A-code-coverageArea: Source-based code coverage (-Cinstrument-coverage)Area: Source-based code coverage (-Cinstrument-coverage)

C-bugCategory: This is a bug.Category: This is a bug.

O-androidOperating system: AndroidOperating system: Android

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

Status: Open.

#139907 In rust-lang/rust;

· loynoir opened on Apr 16, 2025

ICE: coverage: <code>symbol_names: unexpected DefPathData: GlobalAsm</code>

A-code-coverageArea: Source-based code coverage (-Cinstrument-coverage)Area: Source-based code coverage (-Cinstrument-coverage)

C-bugCategory: This is a bug.Category: This is a bug.

I-ICEIssue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

Status: Open.

#138261 In rust-lang/rust;

· matthiaskrgr opened on Mar 9, 2025

Test Coverage: cannot find uncovered lines and regions

A-code-coverageArea: Source-based code coverage (-Cinstrument-coverage)Area: Source-based code coverage (-Cinstrument-coverage)

C-bugCategory: This is a bug.Category: This is a bug.

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

Status: Open.

#137524 In rust-lang/rust;

· Nugine opened on Feb 24, 2025

ICE: stack overflow with instrument-coverage + gce

A-code-coverageArea: Source-based code coverage (-Cinstrument-coverage)Area: Source-based code coverage (-Cinstrument-coverage)

C-bugCategory: This is a bug.Category: This is a bug.

F-generic_const_exprs`#![feature(generic_const_exprs)]``#![feature(generic_const_exprs)]`

I-crashIssue: The compiler crashes (SIGSEGV, SIGABRT, etc). Use I-ICE instead when the compiler panics.Issue: The compiler crashes (SIGSEGV, SIGABRT, etc). Use I-ICE instead when the compiler panics.

P-lowLow priorityLow priority

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

Status: Open.

#135060 In rust-lang/rust;

· matthiaskrgr opened on Jan 3, 2025

Tracking issue for stabilizing the <code>#[coverage(..)]</code> attribute

A-code-coverageArea: Source-based code coverage (-Cinstrument-coverage)Area: Source-based code coverage (-Cinstrument-coverage)

C-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFCCategory: An issue tracking the progress of sth. like the implementation of an RFC

Status: Open.

Tracking Issue

#134749 In rust-lang/rust;

· Zalathar opened on Dec 25, 2024

Inlining <code>-Cinstrument-coverage</code> code into a uninstrumented crate causes problems

A-code-coverageArea: Source-based code coverage (-Cinstrument-coverage)Area: Source-based code coverage (-Cinstrument-coverage)

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

Status: Open.

#132436 In rust-lang/rust;

· Zalathar opened on Nov 1, 2024

Coverage information is wrong when using tracing

A-code-coverageArea: Source-based code coverage (-Cinstrument-coverage)Area: Source-based code coverage (-Cinstrument-coverage)

A-proc-macrosArea: Procedural macrosArea: Procedural macros

C-bugCategory: This is a bug.Category: This is a bug.

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

Status: Open.

#131119 In rust-lang/rust;

· xd009642 opened on Oct 1, 2024

<code>-C instrument-coverage</code> misses regions in const assertions

A-code-coverageArea: Source-based code coverage (-Cinstrument-coverage)Area: Source-based code coverage (-Cinstrument-coverage)

C-bugCategory: This is a bug.Category: This is a bug.

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

Status: Open.

#130502 In rust-lang/rust;

· jfrimmel opened on Sep 18, 2024